Sole-rounding machine



v (Nd Model.)

Patented Oct.

INVENTDR:

WITNEEEEE:

3 sheets-sheet. 2.1

` (No Model.)

G. JULIAN. SOLE. MUNDINGV MACHINE.

Patentedot. 23, 1894.

mz mams 'Erstes aannam-uma. WASHINGTON. D. e

UNITED STATES PATENT QEETQEQ CIDEoN JULTAN, oE'EoSToN, MASSACHUSETTS, ASSICNCE, EY DIRECT AND MESNE ASSIGNMENTS, oETwo-THIRDSTO s. M. Timor` SAME PLACE, AND CHARLES S. HULL, or` NEWTON, MASSACHUSETTS. E

soLE-RoUNDlNc MACHINE.

SPECIFICATION forming part of Letters Patent No. 528,128, datedl October 23,1894. Application naa Math 3, 1894. serial N. to2-,175. (No model.)

To all whom it may cncermt Be it known that I, GIDECN JULIAN, of Bos,- ton, in the county of Suffolk and State' of Massachusetts, have invented certain new and useful Improvements in Sole-Rounding Machines, of which the following isa specication. f

This invention relates to certain t improve-` ments in sole-rounding or trimming machines, 1o such as employed in making soles for boots and shoes.

One object of the invention is to provide less complicated and more practical and efcient means than heretofore devised for producng the desired variation in rate of travel of the knife, involving acceleration of the same over the longitudinal sides of the work, and retardation thereof when rounding the ends of the work where more or less abrupt zo turns are made.

Another object of the invention `is to secure a better eect of the Weight employed to hold the knife to the form, by insuring quicker' action and thereby making the knifes travel z5 absolutely accurate and positive. f E

To the above ends, the invention may be said to consist in the combination of arotary table, a knife-carrier pivoted thereon, a fixed` gear, and a planet-gear carried by the table 3o and meshing with the fixed gear, said planetgear having a crank which is connected with the knife-carrier.

The invention further consists in the combination of a rotary table, a pivoted knife- 3 5 holder thereon, a lever carried by the table and connected with the knife-holder, a cam supported by a said lever, a bearing-'piece resting on the cam, and a weight suspended from the said bearing-piece.

The invention also includes incidentals to the above, all of which are fully described hereinafter and pointed out in the claims.

The accompanying drawings illustrate an embodiment of the invention.

Figure l shows a side elevation of the machine. Fig. 2 shows a top plan view, with the knife at a point in its traverse of one side of the work. Fig. 3 shows a similar view, with the knife at one corner of the toe end of the work. Fig. 4 shows a vertical section on line t`4of Fig. l. Fig. 5 is a detail hereinafter referred to. t

Thevsame letters of reference indicate the same parts in all the figures;A r

In thedrawings:A the letter @designates a column, whichl supports a rotary table h, having abevel-gear b formed on its under side and engaged by a driving-pinion b2. Aform cis xedly supported above the table ceutrally thereof, and the leather blank is held thereon by a clamp c', which is operated by a lever c2. The cutting-knife d is suitably supported in a holder d', which is pivoted at d2 to a segmental carrier c, the latter being pivoted at e tothe table h. The holder is yieldingly actuated towardthe form c through .devices hereinafter described, so as to hold the knife to the edge of the form. The rotation of the table carries the knife around the form,twhich properly guidesit through the Work.

The knife-holder is confined and firmly guided in movement on its pivot by an arc shaped gib f, fastened to the carrier e, and the latter is similarly confined by a gib e6 fastened to the table.

It is found` desirable in this class of machines to vary the rate of travel of the knife, in view of the shape of the product.

The long sides offer opportunity for speeding the knife, whereas in turning the abrupt corners of a square toe, so called, and in rounding the heel, the cutter must be retarded, and in fact the cutter should dwell momentarily in turning the corner of the square toe.. The

swiveled carrier e is employed to effect the variation in speed by movement on its pivot,

which in one direction accelerates the knife and concentric therewith, and a smaller gear g meshes therewith and is supported in a bearing on a hub of the table so as to be carried around the fixed gear by the table, the

said two gears `g and g constituting what is known as a sun and planet gearing. The stem or spindle g2 of the planetgear g' extends up through the table, and a crank g3 is affixed to it and carries a wrist-pin g4. This wrist-pin is connected by a pitman g5 with the carrier e. It will be seen that the stroke 1o' of the crank in one direction tends to move the said carrier on its pivot in vthat direction, and the cranks stroke in the opposite direction tends to move the said carrier correspondingly.

The fixed or sun gear g has twice as many teeth as the planet gear, and hence the latter makes two complete revolutions in describing its orbit about the fixed gear. The relative location of the form c and the knifecontrolling parts is such that the knife traverses the longitudinal sides of the form during the cranks stroke which moves the carrier in the same direction that the table carries it, and hence accelerates the speed of the knife; Whereas the knife turns the ends of the form during the cranks stroke in the reverse direction to that in which the table moves, and hence retards the carrier and consequently the knife.

The cranks throw may be varied to suit different forms which may be used, the construction here shown for accomplishing this being as follows: The crank has a longitudinally-extending T-shaped groove t', and the wrist-pin has a correspondingly-formed head engaging said groove. The crank is formed on either side of the slot with a series of notches t", and a collar 2 on the wrist-pin has lugs i3 for engagement with the notches. (See 4o Fig. 5.) A nut 4 on the pin provides means for locking the pin at dierent adjustments.

It will be seen that my arrangement does away entirely with the cam which has heretofore been employed to control the swiveled carrier.

As hereinbefore stated, my invention contemplates, in addition tothe above, improved means for holding'v the knife up to the form, and these will now be described. A forked lever j is pivotally connected at one end with a bearingj on the under side of the table, and its arms extend on opposite sides of the column a, and their ends are connected bya rod jz, which is embraced by a roller-provided traveler j3, the latter being connected by a chain 7'4 with the knife-holder d, and the chain 4 passing over suitably-arranged pulleys 3'5. A similar arrangement is shown in a former patent, granted to me February 17, 1891, N o. 446,686, and in the construction there shown, the lever carries a ring, which is designed to move longitudinally and to rotate on the central column; and another ring rests upon it but is non-rotatable, and carries a cross-piece 65 from which a weight is suspended. In this arrangement, the weight moves up and down, as the knife follows the form, the downward movement taking place when the knife traverses the shank of the form. I have found that, under this arrangement, the tardiness of the Weight is objectionable, and have therefore devised a construction which overcomes this difficulty. A collarm loosely surrounds the column a, and has trunnions which journal in the arms of the lever j, and the upper surface m of said collar is given an undulating cam-form, there being two diametrically opposite depressions and corresponding rises. A cross-bar '1t extends through slots n in opposite sides of the column, and its protruding ends are provided with rollers n2, which rest on' the cam m. A weight is suspended by a rod n3 from the said bar n. It being understood that the collar m rotates around the column with the table, it will be seen that a proper relative location of parts will cause rises in the cam-surface to act on the rollers when the knife moves into the shank-portions of the form, and depressions in the cam permit the outward movement of the knife. The cam takes up the up-anddown motion of the weight which would otherwise occur, so that there is little if any,

movement of the weight.

The co-action of the cam and the weight eiects a prompt and positive adaptation of the knife to the contour of the form.

It is evident that the invention here disclosed is capable of embodiment varying more or less from that here illustrated, and hence is not limited in this respect. l

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. A solerounding machine, comprising in its construction a rotary table, a knife-carrierpivoted on the table, a stationary gear, and a planet-gear carried by the rotary table and meshing with said fixed gear, said planetgear having a crank which is connected with the knife-carrier.

2. A sole-rounding machine, comprising in its construction a rotary table, a knife-carrier pivoted on the table, a stationary gear, a planet-gear carried by the rotary table and meshing with said fixed gear, said planetgear having a crank, and a pitman connecting the knife-carrier and the said crank and adjustably connected with the latter.

3. A sole-rounding machine, comprising in its construction a rotary table, a knife-holder pivoted thereon, a lever carried by the table and connected with the said holder, a cam carried by said lever, a bearing-piece resting on the cam, and a weight suspended from said bearing-piece.

4. A sole-rounding machine, comprising in its construction a supporting column, a rotary table, a pivoted knife-holder thereon, a lever pivoted to the under side of the table and IOO IIO

embracing the column, a. flexible connection name to this specification, in the presence of between the lever and the knife-holder,a, cam two subscribing` Witnesses, this 22d day of encircling the column and supported by the December, A. D. 1893.

lever, a. cross-bar extending through the col- GIDEON JULIAN. 5 umn and bearing on the cam, and a Weight Witnesses: i suspended from the said cross-bar. ARTHUR W. CROSSLEY,

In testimony whereof I have signed my F. P. DAVIS. 

